Properties and Applications: bright blue light pink. Soluble in water for product red, solubility of 35 g/L (60 ℃), 42 g/L (97 ℃), slightly soluble in soluble fiber element, soluble in ethanol, insoluble in other organic solvents. The strong sulfuric acid for Gray light blue, diluted for purple; Partly dissolved in nitric acid to black. The dye solution to join strong hydrochloric acid for purple, have precipitation; Add thick sodium hydroxide solution for red, have precipitation. In dyeing copper and iron ion colored light slight change. General for viscose fiber or with the silk that the fabric dyeing and printing directly. Can also be used for silk, wool and polyamide fiber dyeing and printing. But with high temperature dispersal dyes with bath dyeing polyester/cotton blended fabric, also used in leather and paper color.

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